Emaigos imports Google contacts and calendars into Emacs. Contacts are stored in a Big Brother Database (BBDB) file, which makes them usable with many Emacs email packages, like Gnus. Google calendars are stored as a single Org-mode file, so events may be viewed as a structured document and possibly shown within an Agenda view. With Emaigos, it's possible to use Google as a contacts and calendars manager, while having all the same data available within Emacs. The original Google contacts and calendars are not modified in any way by Emaigos. The name "Emaigos" is an acronym for "EMAcs Importer for GOogle Stuff".

confluence-el is an Emacs extension that allows you to interact with Atlassian's Confluence wiki. It supports various methods for both navigating/viewing the wiki content and editing wiki pages and associated content.

emacs-epackage is an Emacs extension for the Distributed Emacs Lisp Package System (DELPS). With it, you can install Emacs extensions that have been made available as Git DVCS repositories. This format is called "epackage".

Geiser is a generic Emacs/Scheme interaction mode, featuring an enhanced REPL and a set of minor modes that improve Emacs' basic major mode for Scheme. The main features provided are evaluation of forms in the namespace of the current module, macro expansion, loading of files and modules, namespace-aware identifier completion, automatic documentation, jumping to the definition of an identifier, access to documentation, listings of identifiers exported by a given module, and rudimentary support for debugging. Geiser supports Guile and Racket.

bbdb-vcard imports and exports vCards (version 3.0) as defined in RFC 2425 and RFC 2426 to and from The Insidious Big Brother Database (BBDB). Version 2.1 vCards are converted into version 3.0 on import.

Ymacs is an extensible AJAX text editor aimed for programmers. It's similar in spirit, features, and key bindings to Emacs: it supports multiple buffers, split frames, dynamic completion, multiple keymaps, and Emacs-like undo queue and kill ring. And of course, Emacs-like key bindings for all of that. It provides syntax highlighting and automatic indentation for a few programming modes, currently JavaScript, XML, CSS, and Lisp. Ymacs is based on the DynarchLIB AJAX toolkit and currently runs on Firefox (support for more browsers is planned). It's implemented in JavaScript and can be programmed in JavaScript as it's running.